We have no information that the women were there voluntarily AFAIK.
Likewise, there is no information that anyone in the group was an "extremist". They evidently were observant muslims, but we've recently had multiple-child-abuse arrests in families of other faiths, including observant christians. Those designations reflect religious beliefs; they are not by nature "extremist", but individuals can become so, as can those who are non-observant (the recent case where a woman drove her whole family off a cliff in California springs to mind).